7β-Hydroxy Cholesterol 3β-Acetate CAS 17974-77-5
| CAS No. | 17974-77-5 |
| Molecular Formula | C29H48O3 |
| Molecular Weight | 444.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 444.69 g/mol gives 7β-Hydroxy Cholesterol 3β-Acetate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
7β-Hydroxy Cholesterol 3β-Acetate (CAS 17974-77-5), molecular formula C29H48O3 and molecular weight 444.69 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 7β-Hydroxy Cholesterol 3β-Acetate (C29H48O3) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C29H48O3 |
| Molecular Weight | 444.69 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
Related Hydroxy Standards
- 4-beta-Hydroxy Cholesterol 4-Acetate (CAS 2515-18-6)
- 19-Hydroxy Cholesteryl 3-Acetate (CAS 750-59-4)
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Recommended Standards
- Cholesterol Methyl Carbonate (CAS 15507-52-5)
- Messagenin (CAS 18211-63-7)
- δ-Tocopherol Acetate (CAS 13027-26-4)
- (22S)-22-Hydroxycholest-5-en-3β-yl Acetate (CAS 54604-57-8)
- 6-(N-ethyl-N-(2-methylallyl)sulfamoyl)-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 317329-39-8)
- 2-[(3,5-difluorophenyl)formamido]acetic acid (CAS 923691-92-3)
- 6-Bromo-4,4-dimethylchromane (CAS 1027915-16-7)
- 4,4,5,5-Tetramethyl-1,3,2-dioxaphospholan-2-ol (CAS 58954-06-6)
- 2-Amino-N-[3-(dimethylamino)propyl]benzamide (CAS 1943-20-0)
- 3-{[(4-Amino-5-ethyl-4H-1,2,4-triazol-3-yl)thio]-methyl}-4-methoxybenzaldehyde (CAS 1119450-96-2)
- 2-(4-Methyl-1,4-diazepan-1-yl)cyclopentan-1-ol (CAS 1216048-18-8)
- n-(4-Bromophenyl)-2-(pyrrolidin-1-yl)acetamide (CAS 89473-71-2)
- 7-Hydrazinylisoquinoline (CAS 280120-98-1)
- Acetyl decapeptide-3 (CAS 935288-50-9)
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